Home / 124,742-172,147.60-68,157.02

Finding the Fourth Proportional to 124,742, 172,147.60 and 68,157.02

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Solution

The fourth proportional to 124,742, 172,147.60 and 68,157.02 is: 94,058.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,742 : 172,147.60 = 68,157.02 : x
  2. Step 2: Convert to fraction form
    124,742/172,147.60 = 68,157.02/x
  3. Step 3: Cross multiply
    124,742x = 172,147.60 × 68,157.02
  4. Step 4: Simplify right side
    124,742x = 11,733,067,416.15
  5. Step 5: Solve for x
    x = 11,733,067,416.15/124,742
  6. Step 6: Final answer
    x = 94,058.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.